Nginx Proxy Manager: certbot: error: unrecognized arguments: --dns-digitalocean-credentials

When trying to set up Nginx Proxy Manager (NPM) to create SSL certs for a domain hosted on Digital Ocean using DNS Auth, you may receive an error from certbot:

certbot: error: unrecognized arguments: --dns-digitalocean-credentials

Solution: Logon to the the NPM instance and run:

pip install -U certbot-dns-digitalocean

Rerun the NPM SSL wizard, and your SSL certs will be created.